Nouriel Roubini : a year ago the real economy was really in free fall , the falling output the employment demand export import was parallel on what was going on in 1929 and 1931 , and I think that after the collapse of Lehman the policy makers that have been behind the curve they looked into the base they realized that there was a risk of another depression and you have to command them for taking the very aggressive policy action that stabilized the global economy first bottoming out and out to the beginning of the recovery ,....